Buttero Leather Strap for the Longines Spirit Pilot
When this order came in, the customer skipped the guesswork and pasted the Longines product page for the Spirit Pilot L3.809.4.53.2 straight into the watch model field. That is the most reliable fitment information an order can carry — a link identifies the exact reference better than a model name typed from memory. The request itself was specific: a Buttero strap for the Longines Spirit Pilot, cut to 75/115mm, with white side stitching and a flat, tapered build.
The build
| Watch model | Longines Spirit Pilot (ref. L3.809.4.53.2) |
| Leather | Dark brown Buttero |
| Strap length | 75/115mm |
| Buckle width | 18mm |
| Buckle | Classic, stainless steel |
| Spring bars | Quick release |
| Stitching | Side stitching, white |
| Padding | Flat |
| Tip end | Tapered |
Why these choices
The Spirit Pilot is the pilot's-watch entry in Longines' Spirit line — this reference is a 39mm case with a matte black dial, per Longines' own listing. Dark brown leather over a matte black pilot dial is about as traditional as the pairing gets, and white side stitching adds the working contrast a tool watch can carry without turning flashy.
Buttero is a dense vegetable-tanned leather from the Walpier tannery in Tuscany. It starts firm, breaks in with wear, and builds a patina instead of wearing out — the right temperament for a watch that is meant to fly coach, not sit in a drawer. Flat padding and a tapered tip keep the profile slim, so the leather does the talking rather than the construction.
Two details finish the spec. Quick-release spring bars let the strap swap on and off without tools. And the length runs 75/115mm — a combined 190mm, right around 7.5in end to end — sized to the wearer instead of a factory default. One clarification: the 18mm in the table is the buckle width, the strap's width at the clasp end. It is not the lug width, which was not part of this order.
Frequently asked questions
What width strap does the Longines Spirit Pilot need?
Measure the inside gap between the lugs in millimeters, or check the documentation that came with the watch. The VGreen configurator covers lug widths from 8mm to 30mm (about 0.31in to 1.18in), so you enter the measured width and the strap is cut to it — no rounding to the nearest stock size.
Can I order this exact Buttero strap for the Longines Spirit Pilot?
Yes. Choose dark brown on the Buttero strap page, then set white side stitching, flat padding, a tapered tip, and quick-release bars in the options. Every strap is made to order — allow 2 to 3 weeks to delivery.
Configure yours on the dark brown Buttero watch strap page, browse the Longines watch straps collection, or start from the full custom leather watch straps range if you are still deciding on the leather.